package com.hmdp.utils;

import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * 用户登录拦截器
 * @Author Hu
 */
public class LoginInterceptor implements HandlerInterceptor {

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        // 1. 判断是否拦截： 查看ThreadLoad是否有用户
        if (UserHolder.getUser() == null){
            response.setStatus(401);
            return false;
        }
        // 8.放行
        return true;
    }


}
